code: def _error_trace(history, exec_name):
      print("Error during {} propagation".format(exec_name))
      for i in range(len(history) - 1):
          print("\t{}".format(history[i]))
  
      print("\t{} <-- ERROR".format(history[-1]))
  
file_path: nnabla/python/src/nnabla/utils/inspection/value_trace.py
imports: from __future__ import absolute_import
  from collections import OrderedDict
  from contextlib import contextmanager
  import nnabla.functions
  from .base import FunctionHookCallbackBase
label_desc: Use image node_id 2 for calling a global function with example usage: _error_trace(history, exec_name) without return types